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LONG RANGE PEAK HOUR TRAFFIC Figure 1
(150' + 25'). This will leave 65 feet that can be used as the
taper between these left -turn lanes.
If there are questions regarding this analysis or
additional information is desired, do not hesitate to contact
me.
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MEMORANDUM
TO: Jim McCory, Colorado Land Source
Jim Postle, The James Company
Cathy Mathis, VF Ripley
Eldon Ward, Cityscape Urban Design
Fred Jones, Fort Collins Traffic Operations
Eric Bracke, Fort Collins Traffic Engineer
FROM: Matt Delich __901
DATE: March 26, 1997
SUBJECT: Registry Ridge - Bon Homme Richard Drive geometric
analysis (File: 9557MEM8)
I have been requested to analyze the geometric
requirements on Bon Homme Richard. Drive, west of Shields
Street in Registry Ridge PUD. Past traffic studies for
Registry Ridge analyzed the operation and geometry at various
external intersections along Shields Street and Trilby Road.
This level of analysis was proper. With specific development
proposals on Parcels C and D, access driveways have been
proposed to these parcels from Bon Homme Richard Drive. These
driveways line up with each other. The centerline of the
driveways is approximately 240 feet west of the future west
curb line of Shields Street. City staff requested an
evaluation of the left turn requirements to determine if there
is sufficient room for the left turns. A long range analysis
is necessary to evaluate the full build -out conditions.
The most recent traffic assignments and intersection
evaluations are contained in a memorandum dated September 11,
1996, titled "Registry Ridge traffic study addendum." The
long range peak hour traffic forecast is shown on Figure 3 of
the memorandum. These forecasts reflect the development
program for Registry Ridge as of that date. The forecasts
shown in Figure 1 show the peak hour forecasts for the subject
segment of Bon Homme Richard Drive that reflect the approved
development program for Registry Ridge as of March 24, 1997.
The volumes at the Shields/Bon Homme Richard intersection are
slightly different.
Using the peak hour traffic forecasts shown in Figure 1,
an eastbound left -turn lane of 150 feet is required
approaching Shields Street. This is in consideration of a
traffic signal at this intersection as was demonstrated/
recommended in the various traffic studies. The development
proposed on Parcel D will require a westbound left -turn lane
at the subject access that should be 25 feet long. It is
expected that 60% of the inbound left turns to Parcel D will
be made at the first opportunity to enter the site. In the
available 240 feet, left -turn storage will take up 175 feet